// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/base/audio_decoder_config.h"

#include "base/logging.h"
#include "media/base/limits.h"

namespace media {

AudioDecoderConfig::AudioDecoderConfig()
    : codec_(kUnknownAudioCodec),
      bits_per_channel_(0),
      channel_layout_(CHANNEL_LAYOUT_UNSUPPORTED),
      samples_per_second_(0),
      extra_data_size_(0) {
}

AudioDecoderConfig::AudioDecoderConfig(AudioCodec codec,
                                       int bits_per_channel,
                                       ChannelLayout channel_layout,
                                       int samples_per_second,
                                       const uint8* extra_data,
                                       size_t extra_data_size) {
  Initialize(codec, bits_per_channel, channel_layout, samples_per_second,
             extra_data, extra_data_size);
}

void AudioDecoderConfig::Initialize(AudioCodec codec,
                                    int bits_per_channel,
                                    ChannelLayout channel_layout,
                                    int samples_per_second,
                                    const uint8* extra_data,
                                    size_t extra_data_size) {
  CHECK((extra_data_size != 0) == (extra_data != NULL));

  codec_ = codec;
  bits_per_channel_ = bits_per_channel;
  channel_layout_ = channel_layout;
  samples_per_second_ = samples_per_second;
  extra_data_size_ = extra_data_size;

  if (extra_data_size_ > 0) {
    extra_data_.reset(new uint8[extra_data_size_]);
    memcpy(extra_data_.get(), extra_data, extra_data_size_);
  } else {
    extra_data_.reset();
  }
}

AudioDecoderConfig::~AudioDecoderConfig() {}

bool AudioDecoderConfig::IsValidConfig() const {
  return codec_ != kUnknownAudioCodec &&
      channel_layout_ != CHANNEL_LAYOUT_UNSUPPORTED &&
      bits_per_channel_ > 0 &&
      bits_per_channel_ <= Limits::kMaxBitsPerSample &&
      samples_per_second_ > 0 &&
      samples_per_second_ <= Limits::kMaxSampleRate;
}

AudioCodec AudioDecoderConfig::codec() const {
  return codec_;
}

int AudioDecoderConfig::bits_per_channel() const {
  return bits_per_channel_;
}

ChannelLayout AudioDecoderConfig::channel_layout() const {
  return channel_layout_;
}

int AudioDecoderConfig::samples_per_second() const {
  return samples_per_second_;
}

uint8* AudioDecoderConfig::extra_data() const {
  return extra_data_.get();
}

size_t AudioDecoderConfig::extra_data_size() const {
  return extra_data_size_;
}

}  // namespace media